bool render()
{
glm::ivec2 WindowSize(this->getWindowSize());
// Clear the framebuffer
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glClearBufferfv(GL_COLOR, 0, &glm::vec4(1.0f, 0.5f, 0.0f, 1.0f)[0]);
glUseProgram(ProgramName);
glUniform1i(UniformDiffuse, 0);
// Pass 1
// Render the scene in a multisampled framebuffer
glEnable(GL_MULTISAMPLE);
renderFBO(FramebufferName[framebuffer::RENDER]);
glDisable(GL_MULTISAMPLE);
// Resolved multisampling
glBindFramebuffer(GL_READ_FRAMEBUFFER, FramebufferName[framebuffer::RENDER]);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, FramebufferName[framebuffer::RESOLVE]);
glBlitFramebuffer(
0, 0, FRAMEBUFFER_SIZE.x, FRAMEBUFFER_SIZE.y,
0, 0, FRAMEBUFFER_SIZE.x, FRAMEBUFFER_SIZE.y,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
// Pass 2
// Render the colorbuffer from the multisampled framebuffer
renderFB(TextureName[texture::COLORBUFFER]);
return true;
}
void display()
{
// Clear the framebuffer
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glClearBufferfv(GL_COLOR, 0, &glm::vec4(1.0f, 0.5f, 0.0f, 1.0f)[0]);
glBindProgramPipeline(PipelineName);
// Step 1: Render the scene in a multisampled framebuffer
glEnable(GL_MULTISAMPLE);
renderFBO(FramebufferRenderName);
glDisable(GL_MULTISAMPLE);
// Step 2: Resolved multisampling
glBindFramebuffer(GL_READ_FRAMEBUFFER, FramebufferRenderName);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, FramebufferResolveName);
glBlitFramebuffer(
0, 0, FRAMEBUFFER_SIZE.x, FRAMEBUFFER_SIZE.y,
0, 0, FRAMEBUFFER_SIZE.x, FRAMEBUFFER_SIZE.y,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
// Step 3: Generated mipmaps
glGenerateTextureMipmapEXT(ColorTextureName, GL_TEXTURE_2D);
// Step 4: Render the colorbuffer from the multisampled framebuffer
renderFB(ColorTextureName);
glf::checkError("display");
glf::swapBuffers();
}
bool render()
{
glm::vec2 WindowSize(this->getWindowSize());
{
glm::mat4 ProjectionA = glm::scale(glm::perspective(glm::pi<float>() * 0.25f, float(FRAMEBUFFER_SIZE.x) / FRAMEBUFFER_SIZE.y, 0.1f, 100.0f), glm::vec3(1, -1, 1));
*reinterpret_cast<glm::mat4*>(this->UniformPointer + 0) = ProjectionA * this->view() * glm::mat4(1);
glm::mat4 ProjectionB = glm::perspective(glm::pi<float>() * 0.25f, WindowSize.x / WindowSize.y, 0.1f, 100.0f);
*reinterpret_cast<glm::mat4*>(this->UniformPointer + this->UniformBlockSize) = ProjectionB * this->view() * glm::scale(glm::mat4(1), glm::vec3(2));
}
// Step 1, render the scene in a multisampled framebuffer
glBindProgramPipeline(PipelineName);
renderFBO();
// Step 2: blit
glBlitNamedFramebuffer(FramebufferName[framebuffer::RENDER], FramebufferName[framebuffer::RESOLVE],
0, 0, FRAMEBUFFER_SIZE.x, FRAMEBUFFER_SIZE.y,
0, 0, FRAMEBUFFER_SIZE.x, FRAMEBUFFER_SIZE.y,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
GLenum MaxColorAttachment = GL_COLOR_ATTACHMENT0;
glInvalidateNamedFramebufferData(FramebufferName[framebuffer::RENDER], 1, &MaxColorAttachment);
// Step 3, render the colorbuffer from the multisampled framebuffer
renderFB();
return true;
}
void display()
{
glProgramUniform1i(ProgramName, UniformDiffuse, 0);
// Clear the framebuffer
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glClearBufferfv(GL_COLOR, 0, &glm::vec4(1.0f, 0.5f, 0.0f, 1.0f)[0]);
glUseProgram(ProgramName);
// Pass 1
// Render the scene in a multisampled framebuffer
glEnable(GL_MULTISAMPLE);
renderFBO(ProgramName, FramebufferRenderName);
glDisable(GL_MULTISAMPLE);
// Resolved multisampling
glBindFramebuffer(GL_READ_FRAMEBUFFER, FramebufferRenderName);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, FramebufferResolveName);
glBlitFramebuffer(
0, 0, FRAMEBUFFER_SIZE.x, FRAMEBUFFER_SIZE.y,
0, 0, FRAMEBUFFER_SIZE.x, FRAMEBUFFER_SIZE.y,
GL_COLOR_BUFFER_BIT, GL_LINEAR);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
// Pass 2
// Render the colorbuffer from the multisampled framebuffer
renderFB(ProgramName, ColorTextureName);
glf::checkError("display");
glf::swapBuffers();
}
bool render()
{
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glClearBufferfv(GL_COLOR, 0, &glm::vec4(1.0f, 0.5f, 0.0f, 1.0f)[0]);
glBindProgramPipeline(PipelineName);
// Pass 1, render the scene in a multisampled framebuffer
glEnable(GL_MULTISAMPLE);
glEnable(GL_SAMPLE_SHADING);
glMinSampleShading(4.0f);
//glEnable(GL_SAMPLE_MASK);
//glSampleMaski(0, 0xFF);
renderFBO();
glDisable(GL_MULTISAMPLE);
// Resolved multisampling
glBindFramebuffer(GL_READ_FRAMEBUFFER, FramebufferRenderName);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, FramebufferResolveName);
glBlitFramebuffer(
0, 0, FRAMEBUFFER_SIZE.x, FRAMEBUFFER_SIZE.y,
0, 0, FRAMEBUFFER_SIZE.x, FRAMEBUFFER_SIZE.y,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
// Pass 2, render the colorbuffer from the multisampled framebuffer
glm::vec2 WindowSize(this->getWindowSize());
glViewportIndexedfv(0, &glm::vec4(0, 0, WindowSize)[0]);
renderFB();
return true;
}
void display()
{
// Clear the framebuffer
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glClearBufferfv(GL_COLOR, 0, &glm::vec4(1.0f, 0.5f, 0.0f, 1.0f)[0]);
// Pass 1
// Render the scene in a multisampled framebuffer
glEnable(GL_MULTISAMPLE);
renderFBO(FramebufferName[framebuffer::RENDER]);
glDisable(GL_MULTISAMPLE);
// Resolved multisampling
glBindFramebuffer(GL_READ_FRAMEBUFFER, FramebufferName[framebuffer::RENDER]);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, FramebufferName[framebuffer::RESOLVE]);
glBlitFramebuffer(
0, 0, FRAMEBUFFER_SIZE.x, FRAMEBUFFER_SIZE.y,
0, 0, FRAMEBUFFER_SIZE.x, FRAMEBUFFER_SIZE.y,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
// Pass 2
// Render the colorbuffer from the multisampled framebuffer
renderFB(TextureName[texture::COLORBUFFER]);
glf::checkError("display");
glf::swapBuffers();
}
bool render()
{
glm::vec2 WindowSize(this->getWindowSize());
glUseProgram(ProgramName);
glUniform1i(UniformDiffuse, 0);
// Pass 1
glBindFramebuffer(GL_FRAMEBUFFER, FramebufferName[framebuffer::RENDER]);
glViewport(0, 0, FRAMEBUFFER_SIZE.x, FRAMEBUFFER_SIZE.y);
glClearBufferfv(GL_COLOR, 0, &glm::vec4(0.0f, 0.5f, 1.0f, 1.0f)[0]);
renderFBO();
glBindFramebuffer(GL_FRAMEBUFFER, 0);
// Generate FBO mipmaps
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, TextureName[texture::COLORBUFFER]);
glGenerateMipmap(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, 0);
// Blit framebuffers
GLint const Border = 2;
int const Tile = 4;
glBindFramebuffer(GL_READ_FRAMEBUFFER, FramebufferName[framebuffer::RENDER]);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, FramebufferName[framebuffer::RESOLVE]);
glClearBufferfv(GL_COLOR, 0, &glm::vec4(1.0f, 0.5f, 0.0f, 1.0f)[0]);
for(int j = 0; j < Tile; ++j)
for(int i = 0; i < Tile; ++i)
{
if((i + j) % 2)
continue;
glBlitFramebuffer(0, 0, FRAMEBUFFER_SIZE.x, FRAMEBUFFER_SIZE.y,
FRAMEBUFFER_SIZE.x / Tile * (i + 0) + Border,
FRAMEBUFFER_SIZE.x / Tile * (j + 0) + Border,
FRAMEBUFFER_SIZE.y / Tile * (i + 1) - Border,
FRAMEBUFFER_SIZE.y / Tile * (j + 1) - Border,
GL_COLOR_BUFFER_BIT, GL_LINEAR);
}
// Pass 2
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glViewport(0, 0, static_cast<GLsizei>(WindowSize.x), static_cast<GLsizei>(WindowSize.y));
glClearBufferfv(GL_COLOR, 0, &glm::vec4(1.0f, 1.0f, 1.0f, 1.0f)[0]);
renderFB();
return true;
}
void display()
{
glUseProgram(ProgramName);
// Pass 1
glBindFramebuffer(GL_FRAMEBUFFER, FramebufferRenderName);
glViewport(0, 0, FRAMEBUFFER_SIZE.x, FRAMEBUFFER_SIZE.y);
glClearColor(0.0f, 0.5f, 1.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
renderFBO();
glBindFramebuffer(GL_FRAMEBUFFER, 0);
// Generate FBO mipmaps
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, ColorTextureName);
glGenerateMipmap(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, 0);
// Blit framebuffers
GLint const Border = 2;
int const Tile = 4;
glBindFramebuffer(GL_READ_FRAMEBUFFER, FramebufferRenderName);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, FramebufferResolveName);
for(int j = 0; j < Tile; ++j)
for(int i = 0; i < Tile; ++i)
{
if((i + j) % 2)
continue;
glBlitFramebuffer(0, 0, FRAMEBUFFER_SIZE.x, FRAMEBUFFER_SIZE.y,
FRAMEBUFFER_SIZE.x / Tile * (i + 0) + Border,
FRAMEBUFFER_SIZE.x / Tile * (j + 0) + Border,
FRAMEBUFFER_SIZE.y / Tile * (i + 1) - Border,
FRAMEBUFFER_SIZE.y / Tile * (j + 1) - Border,
GL_COLOR_BUFFER_BIT, GL_LINEAR);
}
// Pass 2
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glViewport(0, 0, Window.Size.x, Window.Size.y);
glClearColor(1.0f, 0.5f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
renderFB();
glf::swapBuffers();
glf::checkError("Render");
}
